sodium_crypto_secretbox_keygen

(PHP 7 >= 7.2.0, PHP 8)

sodium_crypto_secretbox_keygenGenerate random key for sodium_crypto_secretbox

Description

sodium_crypto_secretbox_keygen(): string

Generate a key for use with sodium_crypto_secretbox() and sodium_crypto_secretbox_open().

Parameters

This function has no parameters.

Return Values

Returns the generated string of cryptographically secure random bytes.

Examples

Example #1 sodium_crypto_secretbox_keygen() example

<?php
$key 
sodium_crypto_secretbox_keygen();
var_dumpsodium_bin2hex$key ) );
?>

The above example will output something similar to:

string(64) "88bd1dc51ec81984f3ddc5a8f59a3d95b647e2da3e879f1b9ceb0abd89e7286c"

Example #2 Comparing sodium_crypto_secretbox_keygen() with random_bytes()

<?php
$key 
sodium_crypto_secretbox_keygen();
$bytes random_bytesSODIUM_CRYPTO_SECRETBOX_KEYBYTES );
var_dumpmb_strlen$key'8bit' ) === mb_strlen$bytes'8bit' ) );
?>

The above example will output:

bool(true)

See Also

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